Syntheses of Trans- and Cis-3-Methoxy-4-methylthio-2-piperidinethiones previously proposed for raphanusanins; correct structures of raphanusanins
作者:Shigeru Nishiyama、Shosuke Yamamura、Koji Hasegawa、Masako Sakoda、Katsumasa Harada
DOI:10.1016/s0040-4039(00)93594-9
日期:1991.11
Trans- and cis-3-methoxy-4-methylthio-2-piperidinethiones previously proposed for raphanusanins as a light-induced growth inhibitor, have been synthesized starting from the known alpha,beta-unsaturated lactam. However, the spectral data of the synthetic compounds are incompatible with those of natural ones. Thus, reexamination of H-1 and C-13 NMR spectra of the natural samples has led to correct structures for raphanusanins. The synthetic compounds also show a growth inhibitory activity.